OP, you do realize that the suspension has a certain range of operation. going lower on stock dimension fixed perch struts will just cause you to bottom out, ride like crap, and handle like crap. only coilovers will allow you to keep some strut travel while allowing you to lower the car some more. either way though you will run out alignment range in the rear and will have to buy aftermarket arms to adjust back in to range.
all that being said. tein s-techs will lower you more, but they are one of the worst spring sets for our cars.
4-Time NNJR ESP Season Champion -15 ESP
3rd Place in 09' Pax Championship/Driver of the Year
2012 Northeast Divisional Champion in ESP